Datatype conversion functions

Datatype conversion functions change expressions from one datatype to another and specify new display formats for date/time information.

**Table 3-3: Server class support for datatype conversion functions**
Function	ASE	ASA	ASIQ	dir_con
convert()	Y	Y	Y	C
inttohex()	Y	N	N	N
hextoint()	Y	N	N	N
biginttohex()	Y	N	N	N
hextobigint()	Y	N	N	N